The Quality Report provides information about all aspects of quality relating to the 2001 Census in England and Wales. In conjunction with the General Report, it provides a comprehensive evaluation of the strengths and weaknesses of the Census operation.

The Report provides an overview of the quality issues and the studies and analyses that have been carried out to improve the quality of Census data. It deals with the lifecycle of the Census project stage by stage, and then provides measures of each of the attributes of quality as defined by the European Statistical System. The final part describes the components of quality of the data for each Census operation.

Introduction
Section 1 Overview
Section 2 Project Lifecycle:
Population Base and Definitions
User Consultation
Forms Design and Testing
Census Quality Survey
Publicity
Data Collection Geography
Field Procedures
Census Coverage Survey
Data Capture and Coding
Load
Edit and Imputation
One Number Census
Validation
Disclosure Control
Household Composition Alogorithm
Output Geography
Outputs
Local Authority Studies
Section 3 Measures of Quality:
Relevance
Accuracy
Timeliness
Accessibility and Clarity
Comparability
Coherence
Completeness
Section 4 Quality by Question:
39 Tables Showing for Each Census Question:
Content of Question
Population
Associated Variables
Respondent Difficulties
Gross Agreement Rate
Data Capture and Loading
Item Non-response
Edit and Imputation
Key Tables
Comparison with Other Sources
Related Information
More Information
Followed by One Table for Each of Nine Groups of Derived Variables (DVs), Showing for Each DV (row):
Description of DV
Abbreviation of DV
Basic Variables from which Derived (Matrix Format)
Index

The OFFICE FOR NATIONAL STATISTICS (ONS) is the government department that provides UK statistical and registration services. ONS is responsible for producing a wide range of key economic and social statistics which are used by policy makers across government to create evidence-based policies and monitor performance against them. The Office also builds and maintains data sources both for itself and for its business and research customers. It makes statistics available so that everyone can easily assess the state of the nation, the performance of government and their own position.